Let my mind just sneak back to a better time
When I was his age and if he's ever mine
Lupe is trying to feel like the young kid in Chicago (could be Chief Keef) would feel.
But he is going back in time, to the times when he was a little kid and these are the “better times” suggesting that when he was young, the young people in Chiraq were having better times then they are having now.
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